The Big Muff Pi with Tone Wicker from Electro-Harmonix is a distortion pedal which has the classic Pi sound along with an added Wicker Tone design which has 3 high-frequency filters for more high-end adjustment, and a Tone switch for an alternate distortion with uncolored gain and powerful drive.

For the original Big Muff sound, you can adjust the unit's Sustain, Volume, and Tone knobs, to achieve its classic warm fuzz tone. By turning the Wicker switch on you can expand the high-frequency bandwidth for bright, clear high-end timbres. Setting the Tone switch to the off position gives you a hotter drive and higher output for a completely different distortion.

The Big Muff has true bypass circuitry, and operates with a 9V battery (included) or a power supply (available separately).